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06-28-2008, 10:18

Ahh, but the heat will still radiate (electromagnetic radiation), the

fan should sweep away the convection currents, but won't do

much with the conduction or radiation. Remember, heat is all

3: radiation, conduction, and convection. You're handling the

convection part of it.

David Brady

'02 LXi, NC

Scott Forman wrote:

Greg,

I can't speak for the others, but for me the installation of the fan

is about circulating air through the engine compartment after shut

down so that all the heat doesn't radiate into the bedroom. The

radiator fan moves so much air through there that these little

plastic fans will have little effect when underway IMO.

Scott Forman

86 PT38 (Bird of the week this week!)

Memphis

--- In "WanderlodgeForum%40yahoogroups.com",
"Gregory OConnor"

..> wrote:

>

> Kurt,Curt, I dont think the fan is used to cool the engine

> components in the compartment it is used to move hot air out befor

> the hot air loses heat to the compartment. The passive dynamics of

> the air movement in the compartment must trap the heat in??????. I

> thought of seeing what the result is if you closed off the side

> vent and lifted the door slightly????? It seems as there is
some

> dynamic that traps the air????? I used PVC to house tail light
wire

> loom that passes the rear hatch door from taillight to tail light

> and the pipe melted and saged 6 inches

>

> One fan should do the trick. if the air pressure in the
compartment

> is too great at 70 mph 5 fans wont help . I wonder if blowing out

is

> the only way to do it since the rad fan opposit blows in???? The

> other problem I see with just hanging a fan is ; without
shrouding,

> the fan has some'200% less air direction. If you add a shroud it

> might exhaust air more effectivly.

>

> GregoryO'Connor

> 94ptRomolandCa

> --- In "WanderlodgeForum%40yahoogroups.com",
"Curt Sprenger"

> > wrote:

> >

> > Kurt,

> >

> > I used one fan. Dick Hayden installed two fans and that
picture

is

> his two

> > fan install.

> >

> > No need to double up the wiring for two fans if they are to
work

> at the same

> > time. For individual fan control add an on/off switch for one
or

> both fans.

> >

> > Thermostats are normally open.

> >

> >

> >

> > On Sat, Jun 28, 2008 at 7:28 AM, bumpersbird >

> wrote:

> >

> > > Curt,

> > >

> > > I was reading your file on (Engine Compartment Hot Air
Exhaust

> Fan

> > > System).

> > >

> > > Did you set up one or two fans?

> > >

> > > In the text it describes a one fan set up but there are
two

fans

> in

> > > the pics.

> > >

> > > Would you clarify that for me?

> > >

> > > I really like the ability to change fan direction to
pull or

> push air

> > > through the compartment. I didn't think of that.
Brilliant!

> > >

> > > The fans I bought are capable of rotating in either
direction

so

> I

> > > would like to set them up that way.

> > >

> > > I'm guessing that the diagram of the relays, breakers,
and

> switchs,

> > > should be installed twice to get full capability out of
a two

fan

> > > system.

> > >

> > > I've got the fans built and mounted on the swing out
grill right

> > > rear, so all I need to do is set up the electrical end
of the

> system.

> > > The picts are still on the home page under new photos.
Pic #

> 62208-4

> > > bumpersbird album.

> > >

> > > I have most of the parts to set it up including realy
neat

> adjustable

> > > temp snap thermostats. I'm assuming that the the
thermostats are

> > > normally open?

> > >

> > > Any help or ideas on your experiance would be great.
Thanks in

> > > advance.

> > >

> > > The rest of you shade tree engineers are welcomed to
throw in

> your

> > > ideas to :}

> > >

> > > Kurt Horvath

> > > 95 PT-42 WLWB

> > > 10AC

> > >

> > >

> > >

> >

> >

> >

> > --

> > Curt Sprenger

> > 1987 PT38 8V92 "MacAttack Racing"

> > Anaheim Hills, CA

> >

>
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